Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 66137091b8fee03d5730190e34d246a4bc1a2219ddaca4303f851308c5a0b0f1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^